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Table 2 Comparison of AST results for Gram-positives: agreement of the new rapid procedure with standard method

From: Identification by mass spectrometry and automated susceptibility testing from positive bottles: a simple, rapid, and standardized approach to reduce the turnaround time in the management of blood cultures

Antimicrobial agent No. of test Susceptibilities EA CA mE ME VME
S I R No. % No. % No. % No. % No. %
Ampicillin 20 18 0 2 20 100 20 100 0 0.0 0 0.0 0 0.0
Ampicillin-sulbactam 16 14 0 2 16 100 16 100 0 0.0 0 0.0 0 0.0
Cefotaxime 9 9 0 0 9 100 9 100 0 0.0 0 0.0 0 0.0
Ceftriaxone 9 9 0 0 8 89 9 100 0 0.0 0 0.0 0 0.0
Clindamycin 91 52 0 39 80 88 82 90 2 2.2 6 11.5 1 2.6
Daptomycin 71 70 0 1 69 97 70 99 0 0.0 1 1.4 0 0.0
Erythromycin 95 48 1 46 93 98 89 94 5 5.3 1 1.1 0 0.0
Gentamicin 71 46 0 25 70 99 70 99 0 0.0 0 0.0 1 4.0
Imipenem 21 20 0 1 21 100 21 100 0 0.0 0 0.0 0 0.0
Levofloxacin 95 54 1 40 95 100 94 99 1 1.1 0 0.0 0 0.0
Linezolid 92 92 0 0 91 99 92 100 0 0.0 0 0.0 0 0.0
Nitrofurantoin 15 15 0 0 15 100 15 100 0 0.0 0 0.0 0 0.0
Oxacillin 70 36 0 34 70 100 70 100 0 0.0 0 0.0 0 0.0
Penicillin 81 23 0 58 78 96 80 99 0 0.0 0 0.0 1 1.7
Rifampicin 76 69 0 7 74 97 75 99 0 0.0 0 0.0 1 14.3
Teicoplanin 87 71 0 16 80 92 82 94 0 0.0 2 2.3 3 18.7
Tetracycline 76 49 15 12 75 99 74 97 1 1.3 1 1.3 0 0.0
Tigecycline 87 87 0 0 87 100 87 100 0 0.0 0 0.0 0 0.0
Vancomycin 97 97 0 0 91 94 93 96 0 0.0 4 4.1 0 0.0
TOTAL 1179 879 17 283 1142 96.9 1148 97.4 9 0.8 15 1.7 7 2.5